Power-transmission device.



A. C. ZWA'RICH.. POWER TRANSMISSION DEVICE.. vAPPLmAnoN FILED mm1, 1911.

'1,23%598; Patentemug. '21, 1917..

Iwrrnass mvENron.

n i sr-ATES 'TENT OFFICE f ANDREW o. zwnnrcii, 0F Hoixwrns'rnnn,PENNSYLVAN. ,l

To all whom t may concern: v

Beit known thatl, ANDREW C. ZwAnIGH, a subject of the Gzarof Russia,residing at Homestead, county of Allegheny, andk State of Pennsylvania,have invented certainnewand; useful Improvements. inPower-Trans missionDevices, of which the following is a specification. ,s Y i i ThisYinvention 'relates to power transmis-- sion deviceI for driving'lmachines, or foil other purposes wherein found applicable, and has forits object to provide a device of suchl type, infa manner ashereinafterset l forth, with means for changingan intermittent rotarymotion into a continuous one, and-'isfdesigned Vprimarily as an improvement onpthe-construction shown inLetters Patent No.:1,179,599, grantedto `me- April 18th, 1916,'and besides including the objectsv andadvantages set forth.' inf saidv Letters Patent, further includes means,in a manner ashereinafter referred to,to increase the efliciencyoffthemeans for changingthe intermittent rotary motion into a continuousvOne,`f` j v= V`'Further-,objects of.y theinvention are to providea motorwhich is simple in its construction4 `and'-'arran,g,fement, strong,durable, efiicient in vits use,readily set up and` comparativelyyinexpensive to manufacture.

With `the kforegoing and other objects in view the invention consists ofthe novel construction-,- combination and arrangement of parts, ashereinafter more specificallyl described and illustrated in theaccompanying drawing, wherein is shown anfembodiment` ofthe invention,but it is tobe understood that "changes, variations and modificationsif.; canbe'resorted tol which come within the' scopeof the claimshereuntoappended. 2`In the -drawin'g's wherein like reference charactersdenote corresponding parts throughout the several views Figure l isavertical lsectional view of a'` motor in 'accordance with thisinvention.

Fig. 2 is a vertical section on line AII--IL Fig., 1. .s

Fig. 3 is a detail illustratingon'e of the driving elements. i e

Referring to the drawings 'in detail y1' de` notes a stationary shaftprovided intermediate its ends with a crank :2. The shaft l is mountedin a pair of uprights 3.

The reference character 4 denotes aclosed annular hollow casing providedwith a pair y of oppositely disposed lugs 5 which are ro- Speciicaton ofLetters ',Patenty., Patented Alg. t2&1, `Application led April 1.1,1917. i. Serial No. 161,175. I j y f tatably mountediupon the shaft Thel' i ing t is termeda rotor.

`The crank 2 is positioned.within the and has rotatablymounted thereon adisk' which is eccentrically disposed; with respect to the rotor, 4.

Looselyconnected at their inner ends, as

at 7, to the disk 6, as well asbeing arranged equi-distant, is a `seriesof. shifting elements 8, 9, 10 and l1.` yThe outer' ends of said ele-;

ments Sito l'lr-are-loos'ely connected, asy at 12, to thefinnerface ofthe body of therotor Ll.

Thef outer ends ofthe shiftingelements Sto l1 .are arranged equi-distantwith vrespect to each .other and each of said elementsconey s1sts-y of acontractible. and eXpansible coil spring..L

.Fixed to one Side Ofth'rotorisa ratchet wheel land to the other ,sidearatchet Wheel lt, the .latter beingy in. a lreversed -positionwlth'respect tothe former. :Associated ywith the `ratchet wheels aredriving elements or actuating members each'consistingof a le ver. 1 5and a pivoted pawllG.; iThe levers 15 are connected with suitableoperating devices as at 16a. Each Vratchet wheel and its actuatingmember. is vtermed adriving ele. ment and veach is adaptedto-intermittently@v 85 the rotor. in one; direction and lthe other in 1rotate the rotor'. i One driving element lshifts theopposite direction.

-One of the lugszi-s-provided with a pulley'or gear 17 wherebyv therotor can be` orother device and.

coupled with a machiner operate" the same. i

-The shifting elements/8to-'11'.'are f ployed tochangeanthe:intermittent rotor drive into a continuous one, that is to say, 1`

when the rotor is intermittently operatedV by a driving elementtheshiftingelementswill successively expand l and.. contract `andduring. 'the contracting movement thereof causefthe rotor toA revolve. iSuch movement is had in view of the fact, that thedisk 6..

is eccentrically disposed with 'respect -tov` the rotor and that theinnerends ofthe shiftinglelements are off-center. yWhenthe shift-''ingelement 8 .assumes the position illus-vtrated in Fig. 1, it iscompletely contracted, and-asthe' rotor revolves'it is gradi volving therotor. In view of the lforeunder suchcircumstancesitselicienCyfis-alsoarm 18, having its louter end providedwithy a yoke v19, in whiclifis pivotally mounted' agoing arrangement asstated the intermittent impulse given the rotor by the driving'increased'. y The means just referred toconsists of a seriesof pivotedtensioning devices, one for each shifting element, and eachof" saiddevices consists of apivoted roller- 20, the latter being.- capable 'ofbearing against the central portion off a shifting element andybendingsaid central. portion to one side A during the operation of: therotor,

asshown in. Fig.y l'. The arm 18 is pivotally` connected to, ay lug: 21iarranged in close proximity to the point of connection betweenthesliiftingelementsiand the rotor. Formed integral:` with. and projectingfrom the arm f the sliiftiiigelement, and. which swingsthearmy 18:toward they shifting element, the:

i roller 20 engages the shifting'element and- 18 `at an angle. withlrespect thereto is a. coupling arm: 22, which is connected with theshiftingelement asfat 23, and actsas-av meansforI coupling the arm 18.with that shiftingelement with which it; isassociated;y

It will be assumed that the shifting element v8` is. in the positionlshown. in Fig; l,

as suchfelement is contracted;` the coupling arm 22,.will' move towardthe outerfend. of

bendsfit at,r its center thereby increasing the tension-ofvsaidxelementaAS thero'tor. movesy around,a tensioning device will be gradually movedaway from the shifting elementv until said device assumes: the positionas illustrated inconnection withy the shifting ele- 'ment 10, F ig.,1..Asthe'rotorr con-tinues to move theytension device, due to thecontractingv off the; shifting. element willbe moved toward: saidshifting element until,- the tensioning device 'assumes the-positionasshown inv connection with,theshifting elements 1l;

v 'l Copies Vmf, thisipatentemay, be; .obtainedv for What, I2 claimA isv:--4

l. A power transmission device comprising al crank. shaft, av diskVcarriedaby the` crankl ofl said: shaft', a; rotor revolving-uponAiger/359e `said shaft and having said cra-nk arranged therein, meansfor intermittently rotating said rotor, and a series of expansible andcontractible milling members arranged within said' rotor and havingtheir inner ends connected with said disk at equi-distant points andtheir outer ends connected `to the inner face of the rim of the rotor atequidistant points and providing means for changing the intermittentdriveoi'the rotor into` a continuous one, and tensioning devicesforsaid? pulling-membens.-

2. A power transmission device comprising` a crank shaft, a diskcarriedby'the crank ot said shaft, a rotor revolving upon said shaft andhaving said cnank."arranged therein, means for intermittently rotatingsaid. rotor, and: a series of exfpansible and contractiblepullingmembeisxanrangedz within said. rotorand having their inner endsconnected with said disk at equi-distantv points and vtheir outerI endsconnectedI to the inner acevof' the rimi ofthe rotor. at equidistant,pointsy and providing means for changing the intermittent drivezof.therotor into a continuousone,fandf tensioning.I devicesi forsaidtpulling` members and each,` ofk said devices pivotally` connectedwith the 1 rim'l `of the rotor and coupled with; member. l s

3; A powertransmission device comprising a crank shaft, a disk carried'by; the crank, oi said shaltaL rotor revolving upony said shaft andhaving said crank arranged:

therein, means for intermittently rotating said rotor, and a series, lofeX-pansible andi contractible pulling members arranged with:-V

in said; roton and having their, innenends connected with' said disk'at, equi-distant' pointsand their louter endsconnected to `the innerface of; the rim oi"y the rotor; atl equi-v distant rpoints andprovidingl means for' changing the intermittent: drive-'of the rotorinto a continuous one, andy tensioningfdevices for.- said pullingmembers,` andv eachl of saiddevices pivotally connected'with-thefrim ofthe rotor and coupled with' the, pulling., member, andy each of saiddevices ,includiI-igI a pivoted armi having a roller. capable of:

bearing; against the shifting; element; to bend it atits centen.

In testimony whereof; I: affix-,my signature in the'presencefof twolwitnesses.

ANDREV- C. ZVEARIICHL Witnesses-t MAXl H. SRoLoviTz,

' Luismi-A1 H, SIMON.4

five` cents each,` by addressingthe Commissionerof` Pate-natia.,yWashington, 1').v C3.

the pullingf

